CN203375604U - Heat pump air conditioner system - Google Patents

Heat pump air conditioner system Download PDF

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Publication number
CN203375604U
CN203375604U CN201320384598.XU CN201320384598U CN203375604U CN 203375604 U CN203375604 U CN 203375604U CN 201320384598 U CN201320384598 U CN 201320384598U CN 203375604 U CN203375604 U CN 203375604U
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China
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heat exchanger
heat pump
conditioning system
pump type
type air
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Expired - Lifetime
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CN201320384598.XU
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Chinese (zh)
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张�浩
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Midea Group Co Ltd
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Midea Group Co Ltd
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Abstract

The utility model provides a heat pump air conditioner system. The heat pump air conditioner system comprises a refrigerant circulation loop formed by connecting a compressor, a four-way valve, an indoor heat exchanger and an outdoor heat exchanger through pipelines. A refrigerant heater and a first throttling device capable of adjusting flow are further in sequential series connection with the pipeline between the four-way valve and the outdoor heat exchanger. A second throttling device capable of adjusting the flow is further in series connection with the pipeline between the indoor heat exchanger and the outdoor heat exchanger. The heat pump air conditioner system further comprises a controller which is used for controlling the action of the first throttling device and the second throttling device and for opening or closing the refrigerant heater. By means of the heat pump air conditioner system, non-reversing defrosting of an air conditioner can be realized through control over refrigerant heating, the indoor heat exchanger can supply heat continuously at the time of defrosting, and therefore the comfort in a house is guaranteed.

Description

Heat pump type air conditioning system
Technical field
The utility model belongs to air conditioner technical field, more particularly, relates to a kind of heat pump type air conditioning system with refrigerant heating function.
Background technology
When the air regulator of heat pump type air conditioning system (hereinafter to be referred as air-conditioning) uses under worst cold case, after operation a period of time, outer machine heat exchanger meeting frosting, increased thermal resistance and windage, is unfavorable for heat exchange.For air-conditioning is normally moved, often need the frost of outer machine is removed and melted.
Existing air-conditioned main Defrost mode is the switching cross valve, carries out kind of refrigeration cycle.Although it is clean that such Defrost mode can be removed the frost on heat exchanger, in the process of defrosting, indoor set is out of service, can not give the room continuous heat supply.This just greatly reduces room temperature, has reduced the comfort level in room, has certain drawback.
Existing a kind of Defrost method that adopts hot-gas bypass and refrigerant heating to combine, a kind of conditioner as disclosed as Chinese patent CN200610109150, by having increased by two bypass lines more, heater is placed on wherein on one side on access tube, heater and outdoor heat exchanger, not in same stream, are controlled and are carried out defrost respectively.Although the method also can realize the defrost that do not commutate, and the lasting heat supply of indoor set, structure is loaded down with trivial details, and the flow-control of exhaust bypass is very complicated, and actual operation is not strong.
The utility model content
The purpose of this utility model be to provide a kind of structure and control procedure simple, reliable, as to there is refrigerant heating function heat pump type air conditioning system, be intended to utilize this system to realize that the control procedure heated to refrigerant realizes the not reverse cycle defrost of air-conditioning, and in defrosting, indoor heat exchanger can continue heat supply, guarantees the comfortableness in room.
For achieving the above object, the technical solution adopted in the utility model is: a kind of heat pump type air conditioning system is provided, comprises by pipeline and connect the refrigerant circulation circuit that compressor, cross valve, indoor heat exchanger and outdoor heat exchanger form;
Described cross valve is to the first throttle device that a refrigerant heater and a capable of regulating flow quantity are arranged in sequential series also on the pipeline of described outdoor heat exchanger;
Also be in series with the second throttling arrangement of a capable of regulating flow quantity on pipeline between described indoor heat exchanger and described outdoor heat exchanger;
Described heat pump type air conditioning system also comprises a controller, for controlling described first throttle device and described the second throttling device action and controlling and open or close described refrigerant heater.
Alternatively, described refrigerant heater is electrothermal heater or electromagnetic heater.
Alternatively, described first throttle device is a kind of in electric expansion valve, silicon valve, heating power expansion valve.
Alternatively, described the second throttling arrangement is a kind of in electric expansion valve, silicon valve, heating power expansion valve.
Further, also be in series with respectively a two-way stop valve on the front and back pipeline of described indoor heat exchanger.
Further, also be provided with a gas-liquid separator between the air entry of described compressor and described cross valve.
The heat pump type air conditioning system beneficial effect that the utility model provides is: compared with prior art, the utility model heat pump type air conditioning system can be controlled by controller the mutual cooperation operation of first throttle device, the second throttling arrangement and refrigerant heater, realize air-conditioning system refrigeration, heat and the operational mode such as reverse cycle defrost not, not only the frosting of outdoor heat exchanger can be removed, and indoor heat exchanger can continue heat supply in defrosting, guarantee indoor temperature, improve the comfortableness in room.In addition, this air-conditioning system structure and control procedure are simple, reliable, meet the living needs of people's high level.
The accompanying drawing explanation
The operation schematic diagram of heat pump type air conditioning system when freezing that Fig. 1 provides for the utility model embodiment;
The operation schematic diagram of heat pump type air conditioning system when heating that Fig. 2 provides for the utility model embodiment;
The heat pump type air conditioning system that Fig. 3 provides for the utility model embodiment operation schematic diagram of reverse cycle defrost not when heating.
Wherein, Reference numeral:
1 is that compressor, 2 is that cross valve, 3 is that indoor heat exchanger, 4 outdoor heat exchangers, 5 are that refrigerant heater, 61 is that first throttle device, 62 second throttling arrangements, 7 are that two-way shut-off valve, 8 is gas-liquid separator.
The specific embodiment
In order to make technical problem to be solved in the utility model, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Refer to Fig. 1, the existing heat pump type air conditioning system that the utility model is provided describes.Heat pump type air conditioning system comprises the refrigerant circulation circuit that connects compressor 1, cross valve 2, indoor heat exchanger 3 and outdoor heat exchanger 4 formation by pipeline; Specifically, cross valve 2 has interface 2a, 2b, 2c, 2d, and wherein, interface 2a is connected with the air entry of compressor 1, and interface 2b is connected with indoor heat exchanger 3, and interface 2c is connected with the exhaust outlet of compressor 1, and interface 2d is connected with outdoor heat exchanger 4; At cross valve 2 to the first throttle device 61 that refrigerant heater 5 and capable of regulating flow quantity are arranged in sequential series also on the pipeline of outdoor heat exchanger 4; And also be in series with the second throttling arrangement 62 of capable of regulating flow quantity on the pipeline between indoor heat exchanger 3 and outdoor heat exchanger 4; Simultaneously, this heat pump type air conditioning system also comprises the controller (not shown), and this controller is for controlling first throttle device 61 and the second throttling arrangement 62 actions and controlling and open or cut out refrigerant heater 5.
The heat pump type air conditioning system that the utility model provides is simple in structure, control the mutual cooperation operation of first throttle device 61, the second throttling arrangement 62 and refrigerant heater 5 by controller being set to corresponding control program, just can realize air-conditioning system refrigeration, heat and the operational mode such as reverse cycle defrost not, not only the frosting of outdoor heat exchanger 4 can be removed, and indoor heat exchanger 3 can continue to indoor heating in defrosting, guarantee indoor temperature, improve the comfortableness in room.In addition, this air-conditioning system is reliable, can finely meet the living needs of people's high level.
In the present embodiment, the preferred electrothermal heater of refrigerant heater 5, realize the control to the adjusting of its duty (comprise unlatching, close or operate power) to facilitate by the control to electric current, and cleanliness without any pollution; Certainly be not limited to electrothermal heater herein, also can adopt other device that can produce heat, as electromagnetic heater, as long as can carry out automatically controlling to its operation by controller.
In the present embodiment, first throttle device 61 and the second throttling arrangement 62 are necessary for throttling arrangement that can adjust flux, specifically can select electric expansion valve, silicon valve or heating power expansion valve, from the consider of control and cost, this sentences and selects electric expansion valve is good; Because electric expansion valve can accurately be controlled the flow of refrigerant; Reaction speed is faster than heating power expansion valve, can reach in time the required open degree of defrosting, improves defrost performance, and evaporating temperature is also more stable; And can control better suction superheat, adapt to larger refrigeration scope.
Refer to Fig. 1, in the present embodiment, also be in series with respectively a two-way stop valve 7 on the front and back pipeline of indoor heat exchanger 3, can manually control like this keying spool and control passing through and cut-off of refrigerant, provide convenience for installing and overhaul air-conditioning system.
Refer to Fig. 1, in the present embodiment, between the interface 2a of the air entry of compressor 1 and cross valve 2, also be provided with gas-liquid separator 8, this gas-liquid separator can prevent that liquid refrigerants from entering in compressor 1, and only allow gaseous coolant enter in compressor 1, prevent that compressor 1 from producing liquid hit phenomenon.
Below to the utility model heat pump type air conditioning system under refrigerating operaton state, heating operation state and heating operation state not the control method of reverse cycle defrost running status describe.
Refer to Fig. 1, during refrigerating operaton, the control method of the utility model heat pump type air conditioning system specifically comprises: the above-mentioned control heat pump type air conditioning system of controller carries out refrigerating operaton, and controller is controlled that refrigerant heater 5 cuts out, the flow of first throttle device 61 is transferred to maximum, the second throttling arrangement 62 is according to the running status adjust flux of air-conditioning system.Under the refrigerating operaton state, the flow direction of refrigerant in air-conditioning system is such: the air entry of exhaust outlet → cross valve 2 → refrigerant heater 5 → first throttle device 61 → outdoor heat exchanger 4 → the second throttling arrangement 62 → indoor heat exchanger 3 → compressors 1 of compressor 1.Under this refrigerant circulation pattern, air-conditioning system is sustainable is freezed to indoor.
Referring to Fig. 2, when needs air-conditioning system heating operation, its control method is specially: controller is controlled heat pump type air conditioning system and is carried out refrigerating operaton, and controller is controlled that refrigerant heater 5 cuts out, the flow of first throttle device 61 is transferred to maximum, the second throttling arrangement 62 is according to the running status adjust flux of air-conditioning system.Now, the flow direction of refrigerant in air-conditioning system is such: the air entry of exhaust outlet → cross valve 2 → indoor heat exchanger 3 → the second throttling arrangement 62 → outdoor heat exchanger 4 → first throttle device 61 → refrigerant heater 5 → compressors 1 of compressor 1.Under this refrigerant circulation pattern, air-conditioning system is sustainable carries out heat supply to indoor.
Refer to Fig. 3, in heating process, when the outdoor heat exchanger frosting need to defrost, its control method is specially: controller is controlled heat pump type air conditioning system and is continued to carry out heating operation, and controller is controlled, and refrigerant heater 5 is opened, first throttle device 61 is transferred to maximum according to the running status adjust flux of air-conditioning system, the flow of the second throttling arrangement 62.Now, the flow direction of refrigerant in air-conditioning system is identical during with the heating operation state: (refrigerant is high temperature to the exhaust outlet of compressor 1, high pressure, gaseous state) → cross valve 2 → indoor heat exchanger 3(refrigerant is middle temperature, high pressure, the gas-liquid mixed state, for indoor heating) → the second throttling arrangement 62(peak flow values, do not produce restriction effect, therefore temperature from the second throttling arrangement 62 refrigerant out is still, high pressure, the gas-liquid mixed state) temperature in → outdoor heat exchanger 4(, high pressure, gas-liquid mixed state refrigerant is outdoor heat exchanger defrosting) → first throttle device 61(is according to the running state of air conditioner adjust flux, from first throttle device 61, refrigerant out becomes low temperature after throttling, low pressure, liquid state) → refrigerant heater 5(refrigerant becomes low temperature after the heater heating, low pressure, the air entry of gaseous state) → compressor 1.Under this refrigerant circulation pattern, air-conditioning system is sustainable realizes the defrosting to outdoor heat exchanger to indoor being heated the time.
To sum up, the utility model heat pump type air conditioning system can be by controlling the mutual cooperation operation of first throttle device 61, the second throttling arrangement 62 and refrigerant heater 5 in the utility model heat pump type air conditioning system, realize air-conditioning system refrigeration, heat and the operational mode such as reverse cycle defrost not, not only the frosting of outdoor heat exchanger 4 can be removed, and indoor heat exchanger 3 can continue to indoor transfer heat in defrosting, thereby realize guaranteeing indoor temperature, improve the comfortableness in room.In addition, this Air-condition system control process is simple, reliable, can meet the living needs of people's high level.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.

Claims (6)

1. heat pump type air conditioning system, comprise by pipeline and connect the refrigerant circulation circuit that compressor, cross valve, indoor heat exchanger and outdoor heat exchanger form; It is characterized in that:
Described cross valve is to the first throttle device that a refrigerant heater and a capable of regulating flow quantity are arranged in sequential series also on the pipeline of described outdoor heat exchanger;
Also be in series with the second throttling arrangement of a capable of regulating flow quantity on pipeline between described indoor heat exchanger and described outdoor heat exchanger;
Described heat pump type air conditioning system also comprises a controller, for controlling described first throttle device and described the second throttling device action and controlling and open or close described refrigerant heater.
2. heat pump type air conditioning system as claimed in claim 1, it is characterized in that: described refrigerant heater is electrothermal heater or electromagnetic heater.
3. heat pump type air conditioning system as claimed in claim 1 is characterized in that: described first throttle device is a kind of in electric expansion valve, silicon valve, heating power expansion valve.
4. heat pump type air conditioning system as claimed in claim 1 is characterized in that: described the second throttling arrangement is a kind of in electric expansion valve, silicon valve, heating power expansion valve.
5. heat pump type air conditioning system as claimed in claim 1, is characterized in that: also be in series with respectively a two-way stop valve on the front and back pipeline of described indoor heat exchanger.
6. heat pump type air conditioning system as claimed in claim 1, is characterized in that: between the air entry of described compressor and described cross valve, also be provided with a gas-liquid separator.
CN201320384598.XU 2013-06-28 2013-06-28 Heat pump air conditioner system Expired - Lifetime CN203375604U (en)

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Application Number Priority Date Filing Date Title
CN201320384598.XU CN203375604U (en) 2013-06-28 2013-06-28 Heat pump air conditioner system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320384598.XU CN203375604U (en) 2013-06-28 2013-06-28 Heat pump air conditioner system

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104976737A (en) * 2015-06-30 2015-10-14 广东美的制冷设备有限公司 Air conditioner and refrigeration method
CN105066255A (en) * 2015-09-01 2015-11-18 珠海格力电器股份有限公司 Air conditioning system with continuous heat supply function in defrosting process
CN106352629A (en) * 2016-08-22 2017-01-25 珠海格力电器股份有限公司 Air conditioner and bypass heating defrosting control method thereof
CN113251474A (en) * 2021-04-28 2021-08-13 青岛海尔空调器有限总公司 Air conditioner with double compressors

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104976737A (en) * 2015-06-30 2015-10-14 广东美的制冷设备有限公司 Air conditioner and refrigeration method
CN104976737B (en) * 2015-06-30 2018-02-23 广东美的制冷设备有限公司 Air conditioner and refrigerating method
CN105066255A (en) * 2015-09-01 2015-11-18 珠海格力电器股份有限公司 Air conditioning system with continuous heat supply function in defrosting process
CN106352629A (en) * 2016-08-22 2017-01-25 珠海格力电器股份有限公司 Air conditioner and bypass heating defrosting control method thereof
CN113251474A (en) * 2021-04-28 2021-08-13 青岛海尔空调器有限总公司 Air conditioner with double compressors

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